diff --git a/sbin/tunefs/tunefs.c b/sbin/tunefs/tunefs.c index e59b583ea58b..11956f946ff5 100644 --- a/sbin/tunefs/tunefs.c +++ b/sbin/tunefs/tunefs.c @@ -1,1142 +1,1141 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1983, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #if 0 #ifndef lint static const char copyright[] = "@(#) Copyright (c) 1983, 1993\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint static char sccsid[] = "@(#)tunefs.c 8.2 (Berkeley) 4/19/94"; #endif /* not lint */ #endif #include __FBSDID("$FreeBSD$"); /* * tunefs: change layout parameters to an existing file system. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* the optimization warning string template */ #define OPTWARN "should optimize for %s with minfree %s %d%%" static int blocks; static char clrbuf[MAXBSIZE]; static struct uufsd disk; #define sblock disk.d_fs static void usage(void); static void printfs(void); static int journal_alloc(int64_t size); static void journal_clear(void); static void sbdirty(void); int main(int argc, char *argv[]) { const char *avalue, *jvalue, *Jvalue, *Lvalue, *lvalue, *Nvalue, *nvalue; const char *tvalue; const char *special, *on; const char *name; int active; int Aflag, aflag, eflag, evalue, fflag, fvalue, jflag, Jflag, kflag; int kvalue, Lflag, lflag, mflag, mvalue, Nflag, nflag, oflag, ovalue; int pflag, sflag, svalue, Svalue, tflag; int ch, found_arg, i; int iovlen = 0; const char *chg[2]; struct statfs stfs; struct iovec *iov = NULL; char errmsg[255] = {0}; if (argc < 3) usage(); Aflag = aflag = eflag = fflag = jflag = Jflag = kflag = Lflag = 0; lflag = mflag = Nflag = nflag = oflag = pflag = sflag = tflag = 0; avalue = jvalue = Jvalue = Lvalue = lvalue = Nvalue = nvalue = NULL; evalue = fvalue = mvalue = ovalue = svalue = Svalue = 0; active = 0; found_arg = 0; /* At least one arg is required. */ while ((ch = getopt(argc, argv, "Aa:e:f:j:J:k:L:l:m:N:n:o:ps:S:t:")) != -1) switch (ch) { case 'A': found_arg++; Aflag++; break; case 'a': found_arg++; name = "POSIX.1e ACLs"; avalue = optarg; if (strcmp(avalue, "enable") && strcmp(avalue, "disable")) { errx(10, "bad %s (options are %s)", name, "`enable' or `disable'"); } aflag = 1; break; case 'e': found_arg++; name = "maximum blocks per file in a cylinder group"; evalue = atoi(optarg); if (evalue < 1) errx(10, "%s must be >= 1 (was %s)", name, optarg); eflag = 1; break; case 'f': found_arg++; name = "average file size"; fvalue = atoi(optarg); if (fvalue < 1) errx(10, "%s must be >= 1 (was %s)", name, optarg); fflag = 1; break; case 'j': found_arg++; name = "softdep journaled file system"; jvalue = optarg; if (strcmp(jvalue, "enable") && strcmp(jvalue, "disable")) { errx(10, "bad %s (options are %s)", name, "`enable' or `disable'"); } jflag = 1; break; case 'J': found_arg++; name = "gjournaled file system"; Jvalue = optarg; if (strcmp(Jvalue, "enable") && strcmp(Jvalue, "disable")) { errx(10, "bad %s (options are %s)", name, "`enable' or `disable'"); } Jflag = 1; break; case 'k': found_arg++; name = "space to hold for metadata blocks"; kvalue = atoi(optarg); if (kvalue < 0) errx(10, "bad %s (%s)", name, optarg); kflag = 1; break; case 'L': found_arg++; name = "volume label"; Lvalue = optarg; i = -1; while (isalnum(Lvalue[++i]) || Lvalue[i] == '_' || Lvalue[i] == '-') ; if (Lvalue[i] != '\0') { errx(10, "bad %s. Valid characters are " "alphanumerics, dashes, and underscores.", name); } if (strlen(Lvalue) >= MAXVOLLEN) { errx(10, "bad %s. Length is longer than %d.", name, MAXVOLLEN - 1); } Lflag = 1; break; case 'l': found_arg++; name = "multilabel MAC file system"; lvalue = optarg; if (strcmp(lvalue, "enable") && strcmp(lvalue, "disable")) { errx(10, "bad %s (options are %s)", name, "`enable' or `disable'"); } lflag = 1; break; case 'm': found_arg++; name = "minimum percentage of free space"; mvalue = atoi(optarg); if (mvalue < 0 || mvalue > 99) errx(10, "bad %s (%s)", name, optarg); mflag = 1; break; case 'N': found_arg++; name = "NFSv4 ACLs"; Nvalue = optarg; if (strcmp(Nvalue, "enable") && strcmp(Nvalue, "disable")) { errx(10, "bad %s (options are %s)", name, "`enable' or `disable'"); } Nflag = 1; break; case 'n': found_arg++; name = "soft updates"; nvalue = optarg; if (strcmp(nvalue, "enable") != 0 && strcmp(nvalue, "disable") != 0) { errx(10, "bad %s (options are %s)", name, "`enable' or `disable'"); } nflag = 1; break; case 'o': found_arg++; name = "optimization preference"; if (strcmp(optarg, "space") == 0) ovalue = FS_OPTSPACE; else if (strcmp(optarg, "time") == 0) ovalue = FS_OPTTIME; else errx(10, "bad %s (options are `space' or `time')", name); oflag = 1; break; case 'p': found_arg++; pflag = 1; break; case 's': found_arg++; name = "expected number of files per directory"; svalue = atoi(optarg); if (svalue < 1) errx(10, "%s must be >= 1 (was %s)", name, optarg); sflag = 1; break; case 'S': found_arg++; name = "Softdep Journal Size"; Svalue = atoi(optarg); if (Svalue < SUJ_MIN) errx(10, "%s must be >= %d (was %s)", name, SUJ_MIN, optarg); break; case 't': found_arg++; name = "trim"; tvalue = optarg; if (strcmp(tvalue, "enable") != 0 && strcmp(tvalue, "disable") != 0) { errx(10, "bad %s (options are %s)", name, "`enable' or `disable'"); } tflag = 1; break; default: usage(); } argc -= optind; argv += optind; if (found_arg == 0 || argc != 1) usage(); on = special = argv[0]; if (ufs_disk_fillout(&disk, special) == -1) goto err; /* * Check for unclean filesystem. */ if ((sblock.fs_clean == 0 || (sblock.fs_flags & (FS_UNCLEAN | FS_NEEDSFSCK)) != 0) && (found_arg > 1 || !pflag)) errx(1, "%s is not clean - run fsck.\n", special); if (disk.d_name != special) { if (statfs(special, &stfs) != 0) warn("Can't stat %s", special); if (strcmp(special, stfs.f_mntonname) == 0) active = 1; } if (pflag) { printfs(); exit(0); } if (Lflag) { name = "volume label"; strncpy(sblock.fs_volname, Lvalue, MAXVOLLEN); } if (aflag) { name = "POSIX.1e ACLs"; if (strcmp(avalue, "enable") == 0) { if (sblock.fs_flags & FS_ACLS) { warnx("%s remains unchanged as enabled", name); } else if (sblock.fs_flags & FS_NFS4ACLS) { warnx("%s and NFSv4 ACLs are mutually " "exclusive", name); } else { sblock.fs_flags |= FS_ACLS; warnx("%s set", name); } } else if (strcmp(avalue, "disable") == 0) { if ((~sblock.fs_flags & FS_ACLS) == FS_ACLS) { warnx("%s remains unchanged as disabled", name); } else { sblock.fs_flags &= ~FS_ACLS; warnx("%s cleared", name); } } } if (eflag) { name = "maximum blocks per file in a cylinder group"; if (sblock.fs_maxbpg == evalue) warnx("%s remains unchanged as %d", name, evalue); else { warnx("%s changes from %d to %d", name, sblock.fs_maxbpg, evalue); sblock.fs_maxbpg = evalue; } } if (fflag) { name = "average file size"; if (sblock.fs_avgfilesize == (unsigned)fvalue) { warnx("%s remains unchanged as %d", name, fvalue); } else { warnx("%s changes from %d to %d", name, sblock.fs_avgfilesize, fvalue); sblock.fs_avgfilesize = fvalue; } } if (jflag) { name = "soft updates journaling"; if (strcmp(jvalue, "enable") == 0) { if ((sblock.fs_flags & (FS_DOSOFTDEP | FS_SUJ)) == (FS_DOSOFTDEP | FS_SUJ)) { warnx("%s remains unchanged as enabled", name); } else if (sblock.fs_clean == 0) { warnx("%s cannot be enabled until fsck is run", name); } else if (journal_alloc(Svalue) != 0) { warnx("%s cannot be enabled", name); } else { sblock.fs_flags |= FS_DOSOFTDEP | FS_SUJ; warnx("%s set", name); } } else if (strcmp(jvalue, "disable") == 0) { if ((~sblock.fs_flags & FS_SUJ) == FS_SUJ) { warnx("%s remains unchanged as disabled", name); } else { journal_clear(); sblock.fs_flags &= ~FS_SUJ; sblock.fs_sujfree = 0; warnx("%s cleared but soft updates still set.", name); warnx("remove .sujournal to reclaim space"); } } } if (Jflag) { name = "gjournal"; if (strcmp(Jvalue, "enable") == 0) { if (sblock.fs_flags & FS_GJOURNAL) { warnx("%s remains unchanged as enabled", name); } else { sblock.fs_flags |= FS_GJOURNAL; warnx("%s set", name); } } else if (strcmp(Jvalue, "disable") == 0) { if ((~sblock.fs_flags & FS_GJOURNAL) == FS_GJOURNAL) { warnx("%s remains unchanged as disabled", name); } else { sblock.fs_flags &= ~FS_GJOURNAL; warnx("%s cleared", name); } } } if (kflag) { name = "space to hold for metadata blocks"; if (sblock.fs_metaspace == kvalue) warnx("%s remains unchanged as %d", name, kvalue); else { kvalue = blknum(&sblock, kvalue); if (kvalue > sblock.fs_fpg / 2) { kvalue = blknum(&sblock, sblock.fs_fpg / 2); warnx("%s cannot exceed half the file system " "space", name); } warnx("%s changes from %jd to %d", name, sblock.fs_metaspace, kvalue); sblock.fs_metaspace = kvalue; } } if (lflag) { name = "multilabel"; if (strcmp(lvalue, "enable") == 0) { if (sblock.fs_flags & FS_MULTILABEL) { warnx("%s remains unchanged as enabled", name); } else { sblock.fs_flags |= FS_MULTILABEL; warnx("%s set", name); } } else if (strcmp(lvalue, "disable") == 0) { if ((~sblock.fs_flags & FS_MULTILABEL) == FS_MULTILABEL) { warnx("%s remains unchanged as disabled", name); } else { sblock.fs_flags &= ~FS_MULTILABEL; warnx("%s cleared", name); } } } if (mflag) { name = "minimum percentage of free space"; if (sblock.fs_minfree == mvalue) warnx("%s remains unchanged as %d%%", name, mvalue); else { warnx("%s changes from %d%% to %d%%", name, sblock.fs_minfree, mvalue); sblock.fs_minfree = mvalue; if (mvalue >= MINFREE && sblock.fs_optim == FS_OPTSPACE) warnx(OPTWARN, "time", ">=", MINFREE); if (mvalue < MINFREE && sblock.fs_optim == FS_OPTTIME) warnx(OPTWARN, "space", "<", MINFREE); } } if (Nflag) { name = "NFSv4 ACLs"; if (strcmp(Nvalue, "enable") == 0) { if (sblock.fs_flags & FS_NFS4ACLS) { warnx("%s remains unchanged as enabled", name); } else if (sblock.fs_flags & FS_ACLS) { warnx("%s and POSIX.1e ACLs are mutually " "exclusive", name); } else { sblock.fs_flags |= FS_NFS4ACLS; warnx("%s set", name); } } else if (strcmp(Nvalue, "disable") == 0) { if ((~sblock.fs_flags & FS_NFS4ACLS) == FS_NFS4ACLS) { warnx("%s remains unchanged as disabled", name); } else { sblock.fs_flags &= ~FS_NFS4ACLS; warnx("%s cleared", name); } } } if (nflag) { name = "soft updates"; if (strcmp(nvalue, "enable") == 0) { if (sblock.fs_flags & FS_DOSOFTDEP) warnx("%s remains unchanged as enabled", name); else if (sblock.fs_clean == 0) { warnx("%s cannot be enabled until fsck is run", name); } else { sblock.fs_flags |= FS_DOSOFTDEP; warnx("%s set", name); } } else if (strcmp(nvalue, "disable") == 0) { if ((~sblock.fs_flags & FS_DOSOFTDEP) == FS_DOSOFTDEP) warnx("%s remains unchanged as disabled", name); else { sblock.fs_flags &= ~FS_DOSOFTDEP; warnx("%s cleared", name); } } } if (oflag) { name = "optimization preference"; chg[FS_OPTSPACE] = "space"; chg[FS_OPTTIME] = "time"; if (sblock.fs_optim == ovalue) warnx("%s remains unchanged as %s", name, chg[ovalue]); else { warnx("%s changes from %s to %s", name, chg[sblock.fs_optim], chg[ovalue]); sblock.fs_optim = ovalue; if (sblock.fs_minfree >= MINFREE && ovalue == FS_OPTSPACE) warnx(OPTWARN, "time", ">=", MINFREE); if (sblock.fs_minfree < MINFREE && ovalue == FS_OPTTIME) warnx(OPTWARN, "space", "<", MINFREE); } } if (sflag) { name = "expected number of files per directory"; if (sblock.fs_avgfpdir == (unsigned)svalue) { warnx("%s remains unchanged as %d", name, svalue); } else { warnx("%s changes from %d to %d", name, sblock.fs_avgfpdir, svalue); sblock.fs_avgfpdir = svalue; } } if (tflag) { name = "issue TRIM to the disk"; if (strcmp(tvalue, "enable") == 0) { if (sblock.fs_flags & FS_TRIM) warnx("%s remains unchanged as enabled", name); else { sblock.fs_flags |= FS_TRIM; warnx("%s set", name); } } else if (strcmp(tvalue, "disable") == 0) { if ((~sblock.fs_flags & FS_TRIM) == FS_TRIM) warnx("%s remains unchanged as disabled", name); else { sblock.fs_flags &= ~FS_TRIM; warnx("%s cleared", name); } } } if (sbwrite(&disk, Aflag) == -1) goto err; ufs_disk_close(&disk); if (active) { build_iovec_argf(&iov, &iovlen, "fstype", "ufs"); build_iovec_argf(&iov, &iovlen, "fspath", "%s", on); build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg)); if (nmount(iov, iovlen, stfs.f_flags | MNT_UPDATE | MNT_RELOAD) < 0) { if (errmsg[0]) err(9, "%s: reload: %s", special, errmsg); else err(9, "%s: reload", special); } warnx("file system reloaded"); } exit(0); err: if (disk.d_error != NULL) errx(11, "%s: %s", special, disk.d_error); else err(12, "%s", special); } static void sbdirty(void) { disk.d_fs.fs_flags |= FS_UNCLEAN | FS_NEEDSFSCK; disk.d_fs.fs_clean = 0; } static ufs2_daddr_t journal_balloc(void) { ufs2_daddr_t blk; struct cg *cgp; int valid; static int contig = 1; cgp = &disk.d_cg; for (;;) { blk = cgballoc(&disk); if (blk > 0) break; /* * If we failed to allocate a block from this cg, move to * the next. */ if (cgwrite(&disk) < 0) { warn("Failed to write updated cg"); return (-1); } while ((valid = cgread(&disk)) == 1) { /* * Try to minimize fragmentation by requiring a minimum * number of blocks present. */ if (cgp->cg_cs.cs_nbfree > 256 * 1024) break; if (contig == 0 && cgp->cg_cs.cs_nbfree) break; } if (valid) continue; /* * Try once through looking only for large contiguous regions * and again taking any space we can find. */ if (contig) { contig = 0; disk.d_ccg = 0; warnx("Journal file fragmented."); continue; } warnx("Failed to find sufficient free blocks for the journal"); return -1; } if (bwrite(&disk, fsbtodb(&sblock, blk), clrbuf, sblock.fs_bsize) <= 0) { warn("Failed to initialize new block"); return -1; } return (blk); } /* * Search a directory block for the SUJ_FILE. */ static ino_t dir_search(ufs2_daddr_t blk, int bytes) { char block[MAXBSIZE]; struct direct *dp; int off; if (bread(&disk, fsbtodb(&sblock, blk), block, bytes) <= 0) { warn("Failed to read dir block"); return (-1); } for (off = 0; off < bytes; off += dp->d_reclen) { dp = (struct direct *)&block[off]; if (dp->d_reclen == 0) break; if (dp->d_ino == 0) continue; if (dp->d_namlen != strlen(SUJ_FILE)) continue; if (bcmp(dp->d_name, SUJ_FILE, dp->d_namlen) != 0) continue; return (dp->d_ino); } return (0); } /* * Search in the UFS_ROOTINO for the SUJ_FILE. If it exists we can not enable * journaling. */ static ino_t journal_findfile(void) { union dinodep dp; ino_t ino; int i; if (getinode(&disk, &dp, UFS_ROOTINO) != 0) { warn("Failed to get root inode: %s", disk.d_error); return (-1); } if (sblock.fs_magic == FS_UFS1_MAGIC) { if ((off_t)dp.dp1->di_size >= lblktosize(&sblock, UFS_NDADDR)) { warnx("UFS_ROOTINO extends beyond direct blocks."); return (-1); } for (i = 0; i < UFS_NDADDR; i++) { if (dp.dp1->di_db[i] == 0) break; if ((ino = dir_search(dp.dp1->di_db[i], sblksize(&sblock, (off_t)dp.dp1->di_size, i))) != 0) return (ino); } } else { if ((off_t)dp.dp2->di_size >= lblktosize(&sblock, UFS_NDADDR)) { warnx("UFS_ROOTINO extends beyond direct blocks."); return (-1); } for (i = 0; i < UFS_NDADDR; i++) { if (dp.dp2->di_db[i] == 0) break; if ((ino = dir_search(dp.dp2->di_db[i], sblksize(&sblock, (off_t)dp.dp2->di_size, i))) != 0) return (ino); } } return (0); } static void dir_clear_block(const char *block, off_t off) { struct direct *dp; for (; off < sblock.fs_bsize; off += DIRBLKSIZ) { dp = (struct direct *)&block[off]; dp->d_ino = 0; dp->d_reclen = DIRBLKSIZ; dp->d_type = DT_UNKNOWN; } } /* * Insert the journal at inode 'ino' into directory blk 'blk' at the first * free offset of 'off'. DIRBLKSIZ blocks after off are initialized as * empty. */ static int dir_insert(ufs2_daddr_t blk, off_t off, ino_t ino) { struct direct *dp; char block[MAXBSIZE]; if (bread(&disk, fsbtodb(&sblock, blk), block, sblock.fs_bsize) <= 0) { warn("Failed to read dir block"); return (-1); } bzero(&block[off], sblock.fs_bsize - off); dp = (struct direct *)&block[off]; dp->d_ino = ino; dp->d_reclen = DIRBLKSIZ; dp->d_type = DT_REG; dp->d_namlen = strlen(SUJ_FILE); bcopy(SUJ_FILE, &dp->d_name, strlen(SUJ_FILE)); dir_clear_block(block, off + DIRBLKSIZ); if (bwrite(&disk, fsbtodb(&sblock, blk), block, sblock.fs_bsize) <= 0) { warn("Failed to write dir block"); return (-1); } return (0); } /* * Extend a directory block in 'blk' by copying it to a full size block * and inserting the new journal inode into .sujournal. */ static int dir_extend(ufs2_daddr_t blk, ufs2_daddr_t nblk, off_t size, ino_t ino) { char block[MAXBSIZE]; if (bread(&disk, fsbtodb(&sblock, blk), block, roundup(size, sblock.fs_fsize)) <= 0) { warn("Failed to read dir block"); return (-1); } dir_clear_block(block, size); if (bwrite(&disk, fsbtodb(&sblock, nblk), block, sblock.fs_bsize) <= 0) { warn("Failed to write dir block"); return (-1); } return (dir_insert(nblk, size, ino)); } /* * Insert the journal file into the UFS_ROOTINO directory. We always extend the * last frag */ static int journal_insertfile(ino_t ino) { union dinodep dp; ufs2_daddr_t nblk; ufs2_daddr_t blk; ufs_lbn_t lbn; int size; int off; if (getinode(&disk, &dp, UFS_ROOTINO) != 0) { warn("Failed to get root inode: %s", disk.d_error); sbdirty(); return (-1); } blk = 0; size = 0; nblk = journal_balloc(); if (nblk <= 0) return (-1); /* * For simplicity sake we aways extend the UFS_ROOTINO into a new * directory block rather than searching for space and inserting * into an existing block. However, if the rootino has frags * have to free them and extend the block. */ if (sblock.fs_magic == FS_UFS1_MAGIC) { lbn = lblkno(&sblock, dp.dp1->di_size); off = blkoff(&sblock, dp.dp1->di_size); blk = dp.dp1->di_db[lbn]; size = sblksize(&sblock, (off_t)dp.dp1->di_size, lbn); } else { lbn = lblkno(&sblock, dp.dp2->di_size); off = blkoff(&sblock, dp.dp2->di_size); blk = dp.dp2->di_db[lbn]; size = sblksize(&sblock, (off_t)dp.dp2->di_size, lbn); } if (off != 0) { if (dir_extend(blk, nblk, off, ino) == -1) return (-1); } else { blk = 0; if (dir_insert(nblk, 0, ino) == -1) return (-1); } if (sblock.fs_magic == FS_UFS1_MAGIC) { dp.dp1->di_blocks += (sblock.fs_bsize - size) / DEV_BSIZE; dp.dp1->di_db[lbn] = nblk; dp.dp1->di_size = lblktosize(&sblock, lbn+1); } else { dp.dp2->di_blocks += (sblock.fs_bsize - size) / DEV_BSIZE; dp.dp2->di_db[lbn] = nblk; dp.dp2->di_size = lblktosize(&sblock, lbn+1); } if (putinode(&disk) < 0) { warn("Failed to write root inode: %s", disk.d_error); return (-1); } if (cgwrite(&disk) < 0) { warn("Failed to write updated cg"); sbdirty(); return (-1); } if (blk) { if (cgbfree(&disk, blk, size) < 0) { warn("Failed to write cg"); return (-1); } } return (0); } static int indir_fill(ufs2_daddr_t blk, int level, int *resid) { char indirbuf[MAXBSIZE]; ufs1_daddr_t *bap1; ufs2_daddr_t *bap2; ufs2_daddr_t nblk; int ncnt; int cnt; int i; bzero(indirbuf, sizeof(indirbuf)); bap1 = (ufs1_daddr_t *)indirbuf; bap2 = (void *)bap1; cnt = 0; for (i = 0; i < NINDIR(&sblock) && *resid != 0; i++) { nblk = journal_balloc(); if (nblk <= 0) return (-1); cnt++; if (sblock.fs_magic == FS_UFS1_MAGIC) *bap1++ = nblk; else *bap2++ = nblk; if (level != 0) { ncnt = indir_fill(nblk, level - 1, resid); if (ncnt <= 0) return (-1); cnt += ncnt; } else (*resid)--; } if (bwrite(&disk, fsbtodb(&sblock, blk), indirbuf, sblock.fs_bsize) <= 0) { warn("Failed to write indirect"); return (-1); } return (cnt); } /* * Clear the flag bits so the journal can be removed. */ static void journal_clear(void) { union dinodep dp; ino_t ino; ino = journal_findfile(); if (ino == (ino_t)-1 || ino == 0) { warnx("Journal file does not exist"); return; } printf("Clearing journal flags from inode %ju\n", (uintmax_t)ino); if (getinode(&disk, &dp, ino) != 0) { warn("Failed to get journal inode: %s", disk.d_error); return; } if (sblock.fs_magic == FS_UFS1_MAGIC) dp.dp1->di_flags = 0; else dp.dp2->di_flags = 0; if (putinode(&disk) < 0) { warn("Failed to write journal inode: %s", disk.d_error); return; } } static int journal_alloc(int64_t size) { union dinodep dp; ufs2_daddr_t blk; struct cg *cgp; int resid; ino_t ino; int blks; time_t utime; int i; cgp = &disk.d_cg; ino = 0; /* * If the journal file exists we can't allocate it. */ ino = journal_findfile(); if (ino == (ino_t)-1) { warnx("journal_findfile() failed."); return (-1); } if (ino > 0) { warnx("Journal file %s already exists, please remove.", SUJ_FILE); return (-1); } /* * If the user didn't supply a size pick one based on the filesystem * size constrained with hardcoded MIN and MAX values. We opt for * 1/1024th of the filesystem up to MAX but not exceeding one CG and * not less than the MIN. */ if (size == 0) { size = (sblock.fs_size * sblock.fs_bsize) / 1024; - size = MIN(SUJ_MAX, size); if (size / sblock.fs_fsize > sblock.fs_fpg) size = sblock.fs_fpg * sblock.fs_fsize; size = MAX(SUJ_MIN, size); } /* fsck does not support fragments in journal files. */ size = roundup(size, sblock.fs_bsize); resid = blocks = size / sblock.fs_bsize; if (sblock.fs_cstotal.cs_nbfree < blocks) { warn("Insufficient free space for %jd byte journal", size); return (-1); } /* * Find a cg with enough blocks to satisfy the journal * size. Presently the journal does not span cgs. */ while (cgread(&disk) == 1) { if (cgp->cg_cs.cs_nifree == 0) continue; ino = cgialloc(&disk); if (ino <= 0) break; printf("Using inode %ju in cg %d for %jd byte journal\n", (uintmax_t)ino, cgp->cg_cgx, size); if (getinode(&disk, &dp, ino) != 0) { warn("Failed to get allocated inode: %s", disk.d_error); sbdirty(); goto out; } /* * We leave fields unrelated to the number of allocated * blocks and size uninitialized. This causes legacy * fsck implementations to clear the inode. */ time(&utime); if (sblock.fs_magic == FS_UFS1_MAGIC) { bzero(dp.dp1, sizeof(*dp.dp1)); dp.dp1->di_size = size; dp.dp1->di_mode = IFREG | IREAD; dp.dp1->di_nlink = 1; dp.dp1->di_flags = SF_IMMUTABLE | SF_NOUNLINK | UF_NODUMP; dp.dp1->di_atime = utime; dp.dp1->di_mtime = utime; dp.dp1->di_ctime = utime; } else { bzero(dp.dp2, sizeof(*dp.dp2)); dp.dp2->di_size = size; dp.dp2->di_mode = IFREG | IREAD; dp.dp2->di_nlink = 1; dp.dp2->di_flags = SF_IMMUTABLE | SF_NOUNLINK | UF_NODUMP; dp.dp2->di_atime = utime; dp.dp2->di_mtime = utime; dp.dp2->di_ctime = utime; dp.dp2->di_birthtime = utime; } for (i = 0; i < UFS_NDADDR && resid; i++, resid--) { blk = journal_balloc(); if (blk <= 0) goto out; if (sblock.fs_magic == FS_UFS1_MAGIC) { dp.dp1->di_db[i] = blk; dp.dp1->di_blocks++; } else { dp.dp2->di_db[i] = blk; dp.dp2->di_blocks++; } } for (i = 0; i < UFS_NIADDR && resid; i++) { blk = journal_balloc(); if (blk <= 0) goto out; blks = indir_fill(blk, i, &resid) + 1; if (blks <= 0) { sbdirty(); goto out; } if (sblock.fs_magic == FS_UFS1_MAGIC) { dp.dp1->di_ib[i] = blk; dp.dp1->di_blocks += blks; } else { dp.dp2->di_ib[i] = blk; dp.dp2->di_blocks += blks; } } if (sblock.fs_magic == FS_UFS1_MAGIC) dp.dp1->di_blocks *= sblock.fs_bsize / disk.d_bsize; else dp.dp2->di_blocks *= sblock.fs_bsize / disk.d_bsize; if (putinode(&disk) < 0) { warn("Failed to write allocated inode: %s", disk.d_error); sbdirty(); return (-1); } if (cgwrite(&disk) < 0) { warn("Failed to write updated cg"); sbdirty(); return (-1); } if (journal_insertfile(ino) < 0) { sbdirty(); return (-1); } sblock.fs_sujfree = 0; return (0); } warnx("Insufficient free space for the journal."); out: return (-1); } static void usage(void) { fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n", "usage: tunefs [-A] [-a enable | disable] [-e maxbpg] [-f avgfilesize]", " [-J enable | disable] [-j enable | disable] [-k metaspace]", " [-L volname] [-l enable | disable] [-m minfree]", " [-N enable | disable] [-n enable | disable]", " [-o space | time] [-p] [-s avgfpdir] [-t enable | disable]", " special | filesystem"); exit(2); } static void printfs(void) { warnx("POSIX.1e ACLs: (-a) %s", (sblock.fs_flags & FS_ACLS)? "enabled" : "disabled"); warnx("NFSv4 ACLs: (-N) %s", (sblock.fs_flags & FS_NFS4ACLS)? "enabled" : "disabled"); warnx("MAC multilabel: (-l) %s", (sblock.fs_flags & FS_MULTILABEL)? "enabled" : "disabled"); warnx("soft updates: (-n) %s", (sblock.fs_flags & FS_DOSOFTDEP)? "enabled" : "disabled"); warnx("soft update journaling: (-j) %s", (sblock.fs_flags & FS_SUJ)? "enabled" : "disabled"); warnx("gjournal: (-J) %s", (sblock.fs_flags & FS_GJOURNAL)? "enabled" : "disabled"); warnx("trim: (-t) %s", (sblock.fs_flags & FS_TRIM)? "enabled" : "disabled"); warnx("maximum blocks per file in a cylinder group: (-e) %d", sblock.fs_maxbpg); warnx("average file size: (-f) %d", sblock.fs_avgfilesize); warnx("average number of files in a directory: (-s) %d", sblock.fs_avgfpdir); warnx("minimum percentage of free space: (-m) %d%%", sblock.fs_minfree); warnx("space to hold for metadata blocks: (-k) %jd", sblock.fs_metaspace); warnx("optimization preference: (-o) %s", sblock.fs_optim == FS_OPTSPACE ? "space" : "time"); if (sblock.fs_minfree >= MINFREE && sblock.fs_optim == FS_OPTSPACE) warnx(OPTWARN, "time", ">=", MINFREE); if (sblock.fs_minfree < MINFREE && sblock.fs_optim == FS_OPTTIME) warnx(OPTWARN, "space", "<", MINFREE); warnx("volume label: (-L) %s", sblock.fs_volname); } diff --git a/sys/ufs/ffs/fs.h b/sys/ufs/ffs/fs.h index bd2b9157e467..c2279c183fc5 100644 --- a/sys/ufs/ffs/fs.h +++ b/sys/ufs/ffs/fs.h @@ -1,906 +1,905 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1982, 1986, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)fs.h 8.13 (Berkeley) 3/21/95 * $FreeBSD$ */ #ifndef _UFS_FFS_FS_H_ #define _UFS_FFS_FS_H_ #include #include /* * Each disk drive contains some number of filesystems. * A filesystem consists of a number of cylinder groups. * Each cylinder group has inodes and data. * * A filesystem is described by its super-block, which in turn * describes the cylinder groups. The super-block is critical * data and is replicated in each cylinder group to protect against * catastrophic loss. This is done at `newfs' time and the critical * super-block data does not change, so the copies need not be * referenced further unless disaster strikes. * * For filesystem fs, the offsets of the various blocks of interest * are given in the super block as: * [fs->fs_sblkno] Super-block * [fs->fs_cblkno] Cylinder group block * [fs->fs_iblkno] Inode blocks * [fs->fs_dblkno] Data blocks * The beginning of cylinder group cg in fs, is given by * the ``cgbase(fs, cg)'' macro. * * Depending on the architecture and the media, the superblock may * reside in any one of four places. For tiny media where every block * counts, it is placed at the very front of the partition. Historically, * UFS1 placed it 8K from the front to leave room for the disk label and * a small bootstrap. For UFS2 it got moved to 64K from the front to leave * room for the disk label and a bigger bootstrap, and for really piggy * systems we check at 256K from the front if the first three fail. In * all cases the size of the superblock will be SBLOCKSIZE. All values are * given in byte-offset form, so they do not imply a sector size. The * SBLOCKSEARCH specifies the order in which the locations should be searched. */ #define SBLOCK_FLOPPY 0 #define SBLOCK_UFS1 8192 #define SBLOCK_UFS2 65536 #define SBLOCK_PIGGY 262144 #define SBLOCKSIZE 8192 #define SBLOCKSEARCH \ { SBLOCK_UFS2, SBLOCK_UFS1, SBLOCK_FLOPPY, SBLOCK_PIGGY, -1 } /* * Request standard superblock location in ffs_sbget(). */ #define UFS_STDSB -1 /* Search standard places for superblock */ /* * UFS_NOMSG indicates that superblock inconsistency error messages * should not be printed. It is used by programs like fsck that * want to print their own error message. * * UFS_NOCSUM causes only the superblock itself to be returned, but does * not read in any auxiliary data structures like the cylinder group * summary information. It is used by clients like glabel that just * want to check for possible filesystem types. Using UFS_NOCSUM * skips the superblock checks for csum data which allows superblocks * that have corrupted csum data to be read and used. * * UFS_NOHASHFAIL will note that the check hash is wrong but will still * return the superblock. This is used by the bootstrap code to * give the system a chance to come up so that fsck can be run to * correct the problem. * * UFS_NOWARNFAIL will warn about inconsistencies but still return the * superblock. It includes UFS_NOHASHFAIL. UFS_NOWARNFAIL is used by * programs like fsck_ffs(8) to debug broken filesystems. * * UFS_FSRONLY will only validate the superblock fields needed to * calculate where the backup filesystem superblocks are located. * If these values pass their validation tests, then the superblock * is returned. This flag is used as part of the attempt to find * alternate superblocks when using ffs_sbsearch(). */ #define UFS_NOHASHFAIL 0x0001 /* Ignore check-hash failure */ #define UFS_NOWARNFAIL 0x0003 /* Ignore non-fatal inconsistencies */ #define UFS_NOMSG 0x0004 /* Print no error message */ #define UFS_NOCSUM 0x0008 /* Read just the superblock without csum */ #define UFS_FSRONLY 0x0010 /* Validate only values needed for recovery of alternate superblocks */ #define UFS_ALTSBLK 0x1000 /* Flag used internally */ /* * Max number of fragments per block. This value is NOT tweakable. */ #define MAXFRAG 8 /* * Addresses stored in inodes are capable of addressing fragments * of `blocks'. File system blocks of at most size MAXBSIZE can * be optionally broken into 2, 4, or 8 pieces, each of which is * addressable; these pieces may be DEV_BSIZE, or some multiple of * a DEV_BSIZE unit. * * Large files consist of exclusively large data blocks. To avoid * undue wasted disk space, the last data block of a small file may be * allocated as only as many fragments of a large block as are * necessary. The filesystem format retains only a single pointer * to such a fragment, which is a piece of a single large block that * has been divided. The size of such a fragment is determinable from * information in the inode, using the ``blksize(fs, ip, lbn)'' macro. * * The filesystem records space availability at the fragment level; * to determine block availability, aligned fragments are examined. */ /* * MINBSIZE is the smallest allowable block size. * In order to insure that it is possible to create files of size * 2^32 with only two levels of indirection, MINBSIZE is set to 4096. * MINBSIZE must be big enough to hold a cylinder group block, * thus changes to (struct cg) must keep its size within MINBSIZE. * Note that super blocks are always of size SBLOCKSIZE, * and that both SBLOCKSIZE and MAXBSIZE must be >= MINBSIZE. */ #define MINBSIZE 4096 /* * The path name on which the filesystem is mounted is maintained * in fs_fsmnt. MAXMNTLEN defines the amount of space allocated in * the super block for this name. */ #define MAXMNTLEN 468 /* * The volume name for this filesystem is maintained in fs_volname. * MAXVOLLEN defines the length of the buffer allocated. */ #define MAXVOLLEN 32 /* * There is a 128-byte region in the superblock reserved for in-core * pointers to summary information. Originally this included an array * of pointers to blocks of struct csum; now there are just a few * pointers and the remaining space is padded with fs_ocsp[]. * * NOCSPTRS determines the size of this padding. Historically this * space was used to store pointers to structures that summaried * filesystem usage and layout information. However, these pointers * left various kernel pointers in the superblock which made otherwise * identical superblocks appear to have differences. So, all the * pointers in the superblock were moved to a fs_summary_info structure * reducing the superblock to having only a single pointer to this * structure. When writing the superblock to disk, this pointer is * temporarily NULL'ed out so that the kernel pointer will not appear * in the on-disk copy of the superblock. */ #define NOCSPTRS ((128 / sizeof(void *)) - 1) /* * A summary of contiguous blocks of various sizes is maintained * in each cylinder group. Normally this is set by the initial * value of fs_maxcontig. To conserve space, a maximum summary size * is set by FS_MAXCONTIG. */ #define FS_MAXCONTIG 16 /* * MINFREE gives the minimum acceptable percentage of filesystem * blocks which may be free. If the freelist drops below this level * only the superuser may continue to allocate blocks. This may * be set to 0 if no reserve of free blocks is deemed necessary, * however throughput drops by fifty percent if the filesystem * is run at between 95% and 100% full; thus the minimum default * value of fs_minfree is 5%. However, to get good clustering * performance, 10% is a better choice. hence we use 10% as our * default value. With 10% free space, fragmentation is not a * problem, so we choose to optimize for time. */ #define MINFREE 8 #define DEFAULTOPT FS_OPTTIME /* * Grigoriy Orlov has done some extensive work to fine * tune the layout preferences for directories within a filesystem. * His algorithm can be tuned by adjusting the following parameters * which tell the system the average file size and the average number * of files per directory. These defaults are well selected for typical * filesystems, but may need to be tuned for odd cases like filesystems * being used for squid caches or news spools. */ #define AVFILESIZ 16384 /* expected average file size */ #define AFPDIR 64 /* expected number of files per directory */ /* * The maximum number of snapshot nodes that can be associated * with each filesystem. This limit affects only the number of * snapshot files that can be recorded within the superblock so * that they can be found when the filesystem is mounted. However, * maintaining too many will slow the filesystem performance, so * having this limit is a good idea. */ #define FSMAXSNAP 20 /* * Used to identify special blocks in snapshots: * * BLK_NOCOPY - A block that was unallocated at the time the snapshot * was taken, hence does not need to be copied when written. * BLK_SNAP - A block held by another snapshot that is not needed by this * snapshot. When the other snapshot is freed, the BLK_SNAP entries * are converted to BLK_NOCOPY. These are needed to allow fsck to * identify blocks that are in use by other snapshots (which are * expunged from this snapshot). */ #define BLK_NOCOPY ((ufs2_daddr_t)(1)) #define BLK_SNAP ((ufs2_daddr_t)(2)) /* * Sysctl values for the fast filesystem. */ #define FFS_ADJ_REFCNT 1 /* adjust inode reference count */ #define FFS_ADJ_BLKCNT 2 /* adjust inode used block count */ #define FFS_BLK_FREE 3 /* free range of blocks in map */ #define FFS_DIR_FREE 4 /* free specified dir inodes in map */ #define FFS_FILE_FREE 5 /* free specified file inodes in map */ #define FFS_SET_FLAGS 6 /* set filesystem flags */ #define FFS_ADJ_NDIR 7 /* adjust number of directories */ #define FFS_ADJ_NBFREE 8 /* adjust number of free blocks */ #define FFS_ADJ_NIFREE 9 /* adjust number of free inodes */ #define FFS_ADJ_NFFREE 10 /* adjust number of free frags */ #define FFS_ADJ_NUMCLUSTERS 11 /* adjust number of free clusters */ #define FFS_SET_CWD 12 /* set current directory */ #define FFS_SET_DOTDOT 13 /* set inode number for ".." */ #define FFS_UNLINK 14 /* remove a name in the filesystem */ /* Was FFS_SET_INODE 15 */ /* Was FFS_SET_BUFOUTPUT 16 */ #define FFS_SET_SIZE 17 /* set inode size */ #define FFS_MAXID 17 /* number of valid ffs ids */ /* * Command structure passed in to the filesystem to adjust filesystem values. */ #define FFS_CMD_VERSION 0x19790518 /* version ID */ struct fsck_cmd { int32_t version; /* version of command structure */ int32_t handle; /* reference to filesystem to be changed */ int64_t value; /* inode or block number to be affected */ int64_t size; /* amount or range to be adjusted */ int64_t spare; /* reserved for future use */ }; /* * A recovery structure placed at the end of the boot block area by newfs * that can be used by fsck to search for alternate superblocks. */ struct fsrecovery { int32_t fsr_magic; /* magic number */ int32_t fsr_fsbtodb; /* fsbtodb and dbtofsb shift constant */ int32_t fsr_sblkno; /* offset of super-block in filesys */ int32_t fsr_fpg; /* blocks per group * fs_frag */ u_int32_t fsr_ncg; /* number of cylinder groups */ }; /* * Per cylinder group information; summarized in blocks allocated * from first cylinder group data blocks. These blocks have to be * read in from fs_csaddr (size fs_cssize) in addition to the * super block. */ struct csum { int32_t cs_ndir; /* number of directories */ int32_t cs_nbfree; /* number of free blocks */ int32_t cs_nifree; /* number of free inodes */ int32_t cs_nffree; /* number of free frags */ }; struct csum_total { int64_t cs_ndir; /* number of directories */ int64_t cs_nbfree; /* number of free blocks */ int64_t cs_nifree; /* number of free inodes */ int64_t cs_nffree; /* number of free frags */ int64_t cs_numclusters; /* number of free clusters */ int64_t cs_spare[3]; /* future expansion */ }; /* * Pointers to super block summary information. Placed in a separate * structure so there is just one pointer in the superblock. * * The pointers in this structure are used as follows: * fs_contigdirs references an array that tracks the creation of new * directories * fs_csp references a contiguous array of struct csum for * all cylinder groups * fs_maxcluster references an array of cluster sizes that is computed * as cylinder groups are inspected * fs_active is used when creating snapshots; it points to a bitmap * of cylinder groups for which the free-block bitmap has changed * since the snapshot operation began. */ struct fs_summary_info { uint8_t *si_contigdirs; /* (u) # of contig. allocated dirs */ struct csum *si_csp; /* (u) cg summary info buffer */ int32_t *si_maxcluster; /* (u) max cluster in each cyl group */ u_int *si_active; /* (u) used by snapshots to track fs */ }; #define fs_contigdirs fs_si->si_contigdirs #define fs_csp fs_si->si_csp #define fs_maxcluster fs_si->si_maxcluster #define fs_active fs_si->si_active /* * Super block for an FFS filesystem. */ struct fs { int32_t fs_firstfield; /* historic filesystem linked list, */ int32_t fs_unused_1; /* used for incore super blocks */ int32_t fs_sblkno; /* offset of super-block in filesys */ int32_t fs_cblkno; /* offset of cyl-block in filesys */ int32_t fs_iblkno; /* offset of inode-blocks in filesys */ int32_t fs_dblkno; /* offset of first data after cg */ int32_t fs_old_cgoffset; /* cylinder group offset in cylinder */ int32_t fs_old_cgmask; /* used to calc mod fs_ntrak */ int32_t fs_old_time; /* last time written */ int32_t fs_old_size; /* number of blocks in fs */ int32_t fs_old_dsize; /* number of data blocks in fs */ u_int32_t fs_ncg; /* number of cylinder groups */ int32_t fs_bsize; /* size of basic blocks in fs */ int32_t fs_fsize; /* size of frag blocks in fs */ int32_t fs_frag; /* number of frags in a block in fs */ /* these are configuration parameters */ int32_t fs_minfree; /* minimum percentage of free blocks */ int32_t fs_old_rotdelay; /* num of ms for optimal next block */ int32_t fs_old_rps; /* disk revolutions per second */ /* these fields can be computed from the others */ int32_t fs_bmask; /* ``blkoff'' calc of blk offsets */ int32_t fs_fmask; /* ``fragoff'' calc of frag offsets */ int32_t fs_bshift; /* ``lblkno'' calc of logical blkno */ int32_t fs_fshift; /* ``numfrags'' calc number of frags */ /* these are configuration parameters */ int32_t fs_maxcontig; /* max number of contiguous blks */ int32_t fs_maxbpg; /* max number of blks per cyl group */ /* these fields can be computed from the others */ int32_t fs_fragshift; /* block to frag shift */ int32_t fs_fsbtodb; /* fsbtodb and dbtofsb shift constant */ int32_t fs_sbsize; /* actual size of super block */ int32_t fs_spare1[2]; /* old fs_csmask */ /* old fs_csshift */ int32_t fs_nindir; /* value of NINDIR */ u_int32_t fs_inopb; /* value of INOPB */ int32_t fs_old_nspf; /* value of NSPF */ /* yet another configuration parameter */ int32_t fs_optim; /* optimization preference, see below */ int32_t fs_old_npsect; /* # sectors/track including spares */ int32_t fs_old_interleave; /* hardware sector interleave */ int32_t fs_old_trackskew; /* sector 0 skew, per track */ int32_t fs_id[2]; /* unique filesystem id */ /* sizes determined by number of cylinder groups and their sizes */ int32_t fs_old_csaddr; /* blk addr of cyl grp summary area */ int32_t fs_cssize; /* size of cyl grp summary area */ int32_t fs_cgsize; /* cylinder group size */ int32_t fs_spare2; /* old fs_ntrak */ int32_t fs_old_nsect; /* sectors per track */ int32_t fs_old_spc; /* sectors per cylinder */ int32_t fs_old_ncyl; /* cylinders in filesystem */ int32_t fs_old_cpg; /* cylinders per group */ u_int32_t fs_ipg; /* inodes per group */ int32_t fs_fpg; /* blocks per group * fs_frag */ /* this data must be re-computed after crashes */ struct csum fs_old_cstotal; /* cylinder summary information */ /* these fields are cleared at mount time */ int8_t fs_fmod; /* super block modified flag */ int8_t fs_clean; /* filesystem is clean flag */ int8_t fs_ronly; /* mounted read-only flag */ int8_t fs_old_flags; /* old FS_ flags */ u_char fs_fsmnt[MAXMNTLEN]; /* name mounted on */ u_char fs_volname[MAXVOLLEN]; /* volume name */ u_int64_t fs_swuid; /* system-wide uid */ int32_t fs_pad; /* due to alignment of fs_swuid */ /* these fields retain the current block allocation info */ int32_t fs_cgrotor; /* last cg searched */ void *fs_ocsp[NOCSPTRS]; /* padding; was list of fs_cs buffers */ struct fs_summary_info *fs_si;/* In-core pointer to summary info */ int32_t fs_old_cpc; /* cyl per cycle in postbl */ int32_t fs_maxbsize; /* maximum blocking factor permitted */ int64_t fs_unrefs; /* number of unreferenced inodes */ int64_t fs_providersize; /* size of underlying GEOM provider */ int64_t fs_metaspace; /* size of area reserved for metadata */ int64_t fs_sparecon64[13]; /* old rotation block list head */ int64_t fs_sblockactualloc; /* byte offset of this superblock */ int64_t fs_sblockloc; /* byte offset of standard superblock */ struct csum_total fs_cstotal; /* (u) cylinder summary information */ ufs_time_t fs_time; /* last time written */ int64_t fs_size; /* number of blocks in fs */ int64_t fs_dsize; /* number of data blocks in fs */ ufs2_daddr_t fs_csaddr; /* blk addr of cyl grp summary area */ int64_t fs_pendingblocks; /* (u) blocks being freed */ u_int32_t fs_pendinginodes; /* (u) inodes being freed */ uint32_t fs_snapinum[FSMAXSNAP];/* list of snapshot inode numbers */ u_int32_t fs_avgfilesize; /* expected average file size */ u_int32_t fs_avgfpdir; /* expected # of files per directory */ int32_t fs_save_cgsize; /* save real cg size to use fs_bsize */ ufs_time_t fs_mtime; /* Last mount or fsck time. */ int32_t fs_sujfree; /* SUJ free list */ int32_t fs_sparecon32[21]; /* reserved for future constants */ u_int32_t fs_ckhash; /* if CK_SUPERBLOCK, its check-hash */ u_int32_t fs_metackhash; /* metadata check-hash, see CK_ below */ int32_t fs_flags; /* see FS_ flags below */ int32_t fs_contigsumsize; /* size of cluster summary array */ int32_t fs_maxsymlinklen; /* max length of an internal symlink */ int32_t fs_old_inodefmt; /* format of on-disk inodes */ u_int64_t fs_maxfilesize; /* maximum representable file size */ int64_t fs_qbmask; /* ~fs_bmask for use with 64-bit size */ int64_t fs_qfmask; /* ~fs_fmask for use with 64-bit size */ int32_t fs_state; /* validate fs_clean field */ int32_t fs_old_postblformat; /* format of positional layout tables */ int32_t fs_old_nrpos; /* number of rotational positions */ int32_t fs_spare5[2]; /* old fs_postbloff */ /* old fs_rotbloff */ int32_t fs_magic; /* magic number */ }; /* Sanity checking. */ #ifdef CTASSERT CTASSERT(sizeof(struct fs) == 1376); #endif /* * Filesystem identification */ #define FS_UFS1_MAGIC 0x011954 /* UFS1 fast filesystem magic number */ #define FS_UFS2_MAGIC 0x19540119 /* UFS2 fast filesystem magic number */ #define FS_BAD_MAGIC 0x19960408 /* UFS incomplete newfs magic number */ #define FS_42INODEFMT -1 /* 4.2BSD inode format */ #define FS_44INODEFMT 2 /* 4.4BSD inode format */ /* * Preference for optimization. */ #define FS_OPTTIME 0 /* minimize allocation time */ #define FS_OPTSPACE 1 /* minimize disk fragmentation */ /* * Filesystem flags. * * The FS_UNCLEAN flag is set by the kernel when the filesystem was * mounted with fs_clean set to zero. The FS_DOSOFTDEP flag indicates * that the filesystem should be managed by the soft updates code. * Note that the FS_NEEDSFSCK flag is set and cleared by the fsck * utility. It is set when background fsck finds an unexpected * inconsistency which requires a traditional foreground fsck to be * run. Such inconsistencies should only be found after an uncorrectable * disk error. The FS_NEEDSFSCK can also be set when a mounted filesystem * discovers an internal inconsistency such as freeing a freed inode. * A foreground fsck will clear the FS_NEEDSFSCK flag when it has * successfully cleaned up the filesystem. The kernel uses this * flag to enforce that inconsistent filesystems be mounted read-only. * * The FS_METACKHASH flag when set indicates that the kernel maintains * one or more check hashes. The actual set of supported check hashes * is stored in the fs_metackhash field. Kernels that do not support * check hashes clear the FS_METACKHASH flag to indicate that the * check hashes need to be rebuilt (by fsck) before they can be used. * * When a filesystem is mounted, any flags not included in FS_SUPPORTED * are cleared. This lets newer features know that the filesystem has * been run on an older version of the filesystem and thus that data * structures associated with those features are out-of-date and need * to be rebuilt. * * FS_ACLS indicates that POSIX.1e ACLs are administratively enabled * for the file system, so they should be loaded from extended attributes, * observed for access control purposes, and be administered by object * owners. FS_NFS4ACLS indicates that NFSv4 ACLs are administratively * enabled. This flag is mutually exclusive with FS_ACLS. FS_MULTILABEL * indicates that the TrustedBSD MAC Framework should attempt to back MAC * labels into extended attributes on the file system rather than maintain * a single mount label for all objects. */ #define FS_UNCLEAN 0x00000001 /* filesystem not clean at mount */ #define FS_DOSOFTDEP 0x00000002 /* filesystem using soft dependencies */ #define FS_NEEDSFSCK 0x00000004 /* filesystem needs sync fsck before mount */ #define FS_SUJ 0x00000008 /* Filesystem using softupdate journal */ #define FS_ACLS 0x00000010 /* file system has POSIX.1e ACLs enabled */ #define FS_MULTILABEL 0x00000020 /* file system is MAC multi-label */ #define FS_GJOURNAL 0x00000040 /* gjournaled file system */ #define FS_FLAGS_UPDATED 0x0000080 /* flags have been moved to new location */ #define FS_NFS4ACLS 0x00000100 /* file system has NFSv4 ACLs enabled */ #define FS_METACKHASH 0x00000200 /* kernel supports metadata check hashes */ #define FS_TRIM 0x00000400 /* issue BIO_DELETE for deleted blocks */ #define FS_SUPPORTED 0x00FFFFFF /* supported flags, others cleared at mount*/ /* * Things that we may someday support, but currently do not. * These flags are all cleared so we know if we ran on a kernel * that does not support them. */ #define FS_INDEXDIRS 0x01000000 /* kernel supports indexed directories */ #define FS_VARBLKSIZE 0x02000000 /* kernel supports variable block sizes */ #define FS_COOLOPT1 0x04000000 /* kernel supports cool option 1 */ #define FS_COOLOPT2 0x08000000 /* kernel supports cool option 2 */ #define FS_COOLOPT3 0x10000000 /* kernel supports cool option 3 */ #define FS_COOLOPT4 0x20000000 /* kernel supports cool option 4 */ #define FS_COOLOPT5 0x40000000 /* kernel supports cool option 5 */ #define FS_COOLOPT6 0x80000000 /* kernel supports cool option 6 */ /* * The fs_metackhash field indicates the types of metadata check-hash * that are maintained for a filesystem. Not all filesystems check-hash * all metadata. */ #define CK_SUPERBLOCK 0x0001 /* the superblock */ #define CK_CYLGRP 0x0002 /* the cylinder groups */ #define CK_INODE 0x0004 /* inodes */ #define CK_INDIR 0x0008 /* indirect blocks */ #define CK_DIR 0x0010 /* directory contents */ #define CK_SUPPORTED 0x0007 /* supported flags, others cleared at mount */ /* * The BX_FSPRIV buffer b_xflags are used to track types of data in buffers. */ #define BX_SUPERBLOCK 0x00010000 /* superblock */ #define BX_CYLGRP 0x00020000 /* cylinder groups */ #define BX_INODE 0x00040000 /* inodes */ #define BX_INDIR 0x00080000 /* indirect blocks */ #define BX_DIR 0x00100000 /* directory contents */ #define PRINT_UFS_BUF_XFLAGS "\20\25dir\24indir\23inode\22cylgrp\21superblock" /* * Macros to access bits in the fs_active array. */ #define ACTIVECGNUM(fs, cg) ((fs)->fs_active[(cg) / (NBBY * sizeof(int))]) #define ACTIVECGOFF(cg) (1 << ((cg) % (NBBY * sizeof(int)))) #define ACTIVESET(fs, cg) do { \ if ((fs)->fs_active) \ ACTIVECGNUM((fs), (cg)) |= ACTIVECGOFF((cg)); \ } while (0) #define ACTIVECLEAR(fs, cg) do { \ if ((fs)->fs_active) \ ACTIVECGNUM((fs), (cg)) &= ~ACTIVECGOFF((cg)); \ } while (0) /* * The size of a cylinder group is calculated by CGSIZE. The maximum size * is limited by the fact that cylinder groups are at most one block. * Its size is derived from the size of the maps maintained in the * cylinder group and the (struct cg) size. */ #define CGSIZE(fs) \ /* base cg */ (sizeof(struct cg) + sizeof(int32_t) + \ /* old btotoff */ (fs)->fs_old_cpg * sizeof(int32_t) + \ /* old boff */ (fs)->fs_old_cpg * sizeof(u_int16_t) + \ /* inode map */ howmany((fs)->fs_ipg, NBBY) + \ /* block map */ howmany((fs)->fs_fpg, NBBY) +\ /* if present */ ((fs)->fs_contigsumsize <= 0 ? 0 : \ /* cluster sum */ (fs)->fs_contigsumsize * sizeof(int32_t) + \ /* cluster map */ howmany(fragstoblks(fs, (fs)->fs_fpg), NBBY))) /* * The minimal number of cylinder groups that should be created. */ #define MINCYLGRPS 4 /* * Convert cylinder group to base address of its global summary info. */ #define fs_cs(fs, indx) fs_csp[indx] /* * Cylinder group block for a filesystem. */ #define CG_MAGIC 0x090255 struct cg { int32_t cg_firstfield; /* historic cyl groups linked list */ int32_t cg_magic; /* magic number */ int32_t cg_old_time; /* time last written */ u_int32_t cg_cgx; /* we are the cgx'th cylinder group */ int16_t cg_old_ncyl; /* number of cyl's this cg */ int16_t cg_old_niblk; /* number of inode blocks this cg */ u_int32_t cg_ndblk; /* number of data blocks this cg */ struct csum cg_cs; /* cylinder summary information */ u_int32_t cg_rotor; /* position of last used block */ u_int32_t cg_frotor; /* position of last used frag */ u_int32_t cg_irotor; /* position of last used inode */ u_int32_t cg_frsum[MAXFRAG]; /* counts of available frags */ int32_t cg_old_btotoff; /* (int32) block totals per cylinder */ int32_t cg_old_boff; /* (u_int16) free block positions */ u_int32_t cg_iusedoff; /* (u_int8) used inode map */ u_int32_t cg_freeoff; /* (u_int8) free block map */ u_int32_t cg_nextfreeoff; /* (u_int8) next available space */ u_int32_t cg_clustersumoff; /* (u_int32) counts of avail clusters */ u_int32_t cg_clusteroff; /* (u_int8) free cluster map */ u_int32_t cg_nclusterblks; /* number of clusters this cg */ u_int32_t cg_niblk; /* number of inode blocks this cg */ u_int32_t cg_initediblk; /* last initialized inode */ u_int32_t cg_unrefs; /* number of unreferenced inodes */ int32_t cg_sparecon32[1]; /* reserved for future use */ u_int32_t cg_ckhash; /* check-hash of this cg */ ufs_time_t cg_time; /* time last written */ int64_t cg_sparecon64[3]; /* reserved for future use */ u_int8_t cg_space[1]; /* space for cylinder group maps */ /* actually longer */ }; /* * Macros for access to cylinder group array structures */ #define cg_chkmagic(cgp) ((cgp)->cg_magic == CG_MAGIC) #define cg_inosused(cgp) \ ((u_int8_t *)((u_int8_t *)(cgp) + (cgp)->cg_iusedoff)) #define cg_blksfree(cgp) \ ((u_int8_t *)((u_int8_t *)(cgp) + (cgp)->cg_freeoff)) #define cg_clustersfree(cgp) \ ((u_int8_t *)((u_int8_t *)(cgp) + (cgp)->cg_clusteroff)) #define cg_clustersum(cgp) \ ((int32_t *)((uintptr_t)(cgp) + (cgp)->cg_clustersumoff)) /* * Turn filesystem block numbers into disk block addresses. * This maps filesystem blocks to device size blocks. */ #define fsbtodb(fs, b) ((daddr_t)(b) << (fs)->fs_fsbtodb) #define dbtofsb(fs, b) ((b) >> (fs)->fs_fsbtodb) /* * Cylinder group macros to locate things in cylinder groups. * They calc filesystem addresses of cylinder group data structures. */ #define cgbase(fs, c) (((ufs2_daddr_t)(fs)->fs_fpg) * (c)) #define cgdata(fs, c) (cgdmin(fs, c) + (fs)->fs_metaspace) /* data zone */ #define cgmeta(fs, c) (cgdmin(fs, c)) /* meta data */ #define cgdmin(fs, c) (cgstart(fs, c) + (fs)->fs_dblkno) /* 1st data */ #define cgimin(fs, c) (cgstart(fs, c) + (fs)->fs_iblkno) /* inode blk */ #define cgsblock(fs, c) (cgstart(fs, c) + (fs)->fs_sblkno) /* super blk */ #define cgtod(fs, c) (cgstart(fs, c) + (fs)->fs_cblkno) /* cg block */ #define cgstart(fs, c) \ ((fs)->fs_magic == FS_UFS2_MAGIC ? cgbase(fs, c) : \ (cgbase(fs, c) + (fs)->fs_old_cgoffset * ((c) & ~((fs)->fs_old_cgmask)))) /* * Macros for handling inode numbers: * inode number to filesystem block offset. * inode number to cylinder group number. * inode number to filesystem block address. */ #define ino_to_cg(fs, x) (((ino_t)(x)) / (fs)->fs_ipg) #define ino_to_fsba(fs, x) \ ((ufs2_daddr_t)(cgimin(fs, ino_to_cg(fs, (ino_t)(x))) + \ (blkstofrags((fs), ((((ino_t)(x)) % (fs)->fs_ipg) / INOPB(fs)))))) #define ino_to_fsbo(fs, x) (((ino_t)(x)) % INOPB(fs)) /* * Give cylinder group number for a filesystem block. * Give cylinder group block number for a filesystem block. */ #define dtog(fs, d) ((d) / (fs)->fs_fpg) #define dtogd(fs, d) ((d) % (fs)->fs_fpg) /* * Extract the bits for a block from a map. * Compute the cylinder and rotational position of a cyl block addr. */ #define blkmap(fs, map, loc) \ (((map)[(loc) / NBBY] >> ((loc) % NBBY)) & (0xff >> (NBBY - (fs)->fs_frag))) /* * The following macros optimize certain frequently calculated * quantities by using shifts and masks in place of divisions * modulos and multiplications. */ #define blkoff(fs, loc) /* calculates (loc % fs->fs_bsize) */ \ ((loc) & (fs)->fs_qbmask) #define fragoff(fs, loc) /* calculates (loc % fs->fs_fsize) */ \ ((loc) & (fs)->fs_qfmask) #define lfragtosize(fs, frag) /* calculates ((off_t)frag * fs->fs_fsize) */ \ (((off_t)(frag)) << (fs)->fs_fshift) #define lblktosize(fs, blk) /* calculates ((off_t)blk * fs->fs_bsize) */ \ (((off_t)(blk)) << (fs)->fs_bshift) /* Use this only when `blk' is known to be small, e.g., < UFS_NDADDR. */ #define smalllblktosize(fs, blk) /* calculates (blk * fs->fs_bsize) */ \ ((blk) << (fs)->fs_bshift) #define lblkno(fs, loc) /* calculates (loc / fs->fs_bsize) */ \ ((loc) >> (fs)->fs_bshift) #define numfrags(fs, loc) /* calculates (loc / fs->fs_fsize) */ \ ((loc) >> (fs)->fs_fshift) #define blkroundup(fs, size) /* calculates roundup(size, fs->fs_bsize) */ \ (((size) + (fs)->fs_qbmask) & (fs)->fs_bmask) #define fragroundup(fs, size) /* calculates roundup(size, fs->fs_fsize) */ \ (((size) + (fs)->fs_qfmask) & (fs)->fs_fmask) #define fragstoblks(fs, frags) /* calculates (frags / fs->fs_frag) */ \ ((frags) >> (fs)->fs_fragshift) #define blkstofrags(fs, blks) /* calculates (blks * fs->fs_frag) */ \ ((blks) << (fs)->fs_fragshift) #define fragnum(fs, fsb) /* calculates (fsb % fs->fs_frag) */ \ ((fsb) & ((fs)->fs_frag - 1)) #define blknum(fs, fsb) /* calculates rounddown(fsb, fs->fs_frag) */ \ ((fsb) &~ ((fs)->fs_frag - 1)) /* * Determine the number of available frags given a * percentage to hold in reserve. */ #define freespace(fs, percentreserved) \ (blkstofrags((fs), (fs)->fs_cstotal.cs_nbfree) + \ (fs)->fs_cstotal.cs_nffree - \ (((off_t)((fs)->fs_dsize)) * (percentreserved) / 100)) /* * Determining the size of a file block in the filesystem. */ #define blksize(fs, ip, lbn) \ (((lbn) >= UFS_NDADDR || (ip)->i_size >= \ (uint64_t)smalllblktosize(fs, (lbn) + 1)) \ ? (fs)->fs_bsize \ : (fragroundup(fs, blkoff(fs, (ip)->i_size)))) #define sblksize(fs, size, lbn) \ (((lbn) >= UFS_NDADDR || (size) >= ((lbn) + 1) << (fs)->fs_bshift) \ ? (fs)->fs_bsize \ : (fragroundup(fs, blkoff(fs, (size))))) /* * Number of indirects in a filesystem block. */ #define NINDIR(fs) ((fs)->fs_nindir) /* * Indirect lbns are aligned on UFS_NDADDR addresses where single indirects * are the negated address of the lowest lbn reachable, double indirects * are this lbn - 1 and triple indirects are this lbn - 2. This yields * an unusual bit order to determine level. */ static inline int lbn_level(ufs_lbn_t lbn) { if (lbn >= 0) return 0; switch (lbn & 0x3) { case 0: return (0); case 1: break; case 2: return (2); case 3: return (1); default: break; } return (-1); } static inline ufs_lbn_t lbn_offset(struct fs *fs, int level) { ufs_lbn_t res; for (res = 1; level > 0; level--) res *= NINDIR(fs); return (res); } /* * Number of inodes in a secondary storage block/fragment. */ #define INOPB(fs) ((fs)->fs_inopb) #define INOPF(fs) ((fs)->fs_inopb >> (fs)->fs_fragshift) /* * Softdep journal record format. */ #define JOP_ADDREF 1 /* Add a reference to an inode. */ #define JOP_REMREF 2 /* Remove a reference from an inode. */ #define JOP_NEWBLK 3 /* Allocate a block. */ #define JOP_FREEBLK 4 /* Free a block or a tree of blocks. */ #define JOP_MVREF 5 /* Move a reference from one off to another. */ #define JOP_TRUNC 6 /* Partial truncation record. */ #define JOP_SYNC 7 /* fsync() complete record. */ #define JREC_SIZE 32 /* Record and segment header size. */ #define SUJ_MIN (4 * 1024 * 1024) /* Minimum journal size */ -#define SUJ_MAX (32 * 1024 * 1024) /* Maximum journal size */ #define SUJ_FILE ".sujournal" /* Journal file name */ /* * Size of the segment record header. There is at most one for each disk * block in the journal. The segment header is followed by an array of * records. fsck depends on the first element in each record being 'op' * and the second being 'ino'. Segments may span multiple disk blocks but * the header is present on each. */ struct jsegrec { uint64_t jsr_seq; /* Our sequence number */ uint64_t jsr_oldest; /* Oldest valid sequence number */ uint16_t jsr_cnt; /* Count of valid records */ uint16_t jsr_blocks; /* Count of device bsize blocks. */ uint32_t jsr_crc; /* 32bit crc of the valid space */ ufs_time_t jsr_time; /* timestamp for mount instance */ }; /* * Reference record. Records a single link count modification. */ struct jrefrec { uint32_t jr_op; uint32_t jr_ino; uint32_t jr_parent; uint16_t jr_nlink; uint16_t jr_mode; int64_t jr_diroff; uint64_t jr_unused; }; /* * Move record. Records a reference moving within a directory block. The * nlink is unchanged but we must search both locations. */ struct jmvrec { uint32_t jm_op; uint32_t jm_ino; uint32_t jm_parent; uint16_t jm_unused; int64_t jm_oldoff; int64_t jm_newoff; }; /* * Block record. A set of frags or tree of blocks starting at an indirect are * freed or a set of frags are allocated. */ struct jblkrec { uint32_t jb_op; uint32_t jb_ino; ufs2_daddr_t jb_blkno; ufs_lbn_t jb_lbn; uint16_t jb_frags; uint16_t jb_oldfrags; uint32_t jb_unused; }; /* * Truncation record. Records a partial truncation so that it may be * completed at check time. Also used for sync records. */ struct jtrncrec { uint32_t jt_op; uint32_t jt_ino; int64_t jt_size; uint32_t jt_extsize; uint32_t jt_pad[3]; }; union jrec { struct jsegrec rec_jsegrec; struct jrefrec rec_jrefrec; struct jmvrec rec_jmvrec; struct jblkrec rec_jblkrec; struct jtrncrec rec_jtrncrec; }; #ifdef CTASSERT CTASSERT(sizeof(struct jsegrec) == JREC_SIZE); CTASSERT(sizeof(struct jrefrec) == JREC_SIZE); CTASSERT(sizeof(struct jmvrec) == JREC_SIZE); CTASSERT(sizeof(struct jblkrec) == JREC_SIZE); CTASSERT(sizeof(struct jtrncrec) == JREC_SIZE); CTASSERT(sizeof(union jrec) == JREC_SIZE); #endif extern int inside[], around[]; extern u_char *fragtbl[]; /* * IOCTLs used for filesystem write suspension. */ #define UFSSUSPEND _IOW('U', 1, fsid_t) #define UFSRESUME _IO('U', 2) #endif